A few things that might raise the ire of some here but I thought was interesting:

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1. People Have Really Taken This Barefoot Thing Too Far
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Go barefoot for single-leg exercises other than lunges. In other words, step-ups and Bulgarian split squats (but not regular split squats) allow us to train the lower leg and foot in a "minimalist" context without destroying the big toe.
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All in all, barefoot training is something that can be tremendously useful, but like mankind does with practically everything, we overdid it and wound up with too much of a good thing.

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3. Complete Symmetry is a Myth –
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The Cliff's notes version (if there really is one) is that most people are far more efficient at using their right diaphragm. The right diaphragm has direct attachments (more prominently than the left) to the lumbar spine, which pulls the lumbar spine and sacrum into right orientation. The thoracic spine must, as a compensation, rotate left to allow us to face straight ahead. Simultaneously, since the right diaphragm inflates the left lung, one can get a left rib "flair" (and posterior rib hump on the right side).
LL Cool J

If you put a neutral right scapula on a thoracic spine and rib cage that's rotated to the left (internally rotated right ribs), you get a low right shoulder, which equals a short pec minor and a loss of shoulder internal rotation (there's no need for the humerus to internally rotate on the glenoid).

Not exactly a shot across the bow but it's more than just CF targeted.

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8. People Really Don't Understand Work Capacity
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I'd argue that for the more strength/speed oriented athletes, teaching yourself to not get out of breath may enhance the density of your program, but you aren't necessarily enhancing the quality of work.
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Want to stop getting so gassed while playing soccer? Play soccer.

Want to be able to squat a lot of heavy weights in a training session? Start squatting a lot of heavy weights in a training session.

The more non-specific you get, the more likely you are to be enhancing work capacity for a different task than you'd intended.
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__________________
"And for crying out loud. Don't go into the pain cave. I can't stress this enough. Your Totem Animal won't be in there to help you. You'll be on your own. The Pain Cave is for cowards.
Pain is your companion, don't go hide from it."
-Kelly Starrett